As you probably know, long-term memory (LTM) is one type of memory, however within LTM there are different types. These can be divided into; episodic, semantic and procedural LTM. The differences between these are easiest to understand by thinking of examples. Episodic memories - the way I remember this is by thinking of an episode of a tv programme - it is like an event in your life, something that has happened to a person. Some define it as an autobiographical memory. So this means that its a memory which you can explicitly talk about and remember where and when it happened for example. One example would be - last year I went on holiday to Italy, and we ate the best pizza by the sea on the last day. Semantic memories - these are like general knowledge facts. So think of a pop-quiz when you remember that the capital city of Italy is Rome. You probably can’t remember where you learnt this or when you learnt this fact, but you just know you know it. We acquire these memories, general knowledge facts, throughout our life. Procedural memories - the way I remember this is like a procedure, its a way of doing something. So these memories are for knowing how to do things, like riding a bike. This occurs without us explicitly thinking, oh I need to remember how to ride a bike now - below our conscious awareness. Some say procedural memories are for “motor skills”, thats just another way of saying “knowing how to do things”